Lubricant nipple



Aug. 20, 1929. M, F CARR 1,725,178

LUBRICANT NIPPLE Filed Aug. 25 1925 Patentes Aug. ze, leze.

UNTED ISTATS MOSES F. CARR, OF LEXINGTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- I MENTS, TO ALEMITE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWAR.

LUBRICANT NIPPLE.

Application filed August 25, 1925. Serial N'o. 52,3%.

This invention aims to provide an improved lubricant receiving nipple.

In the drawings which illustrate a preerred embodiment of my invention Figure 1 is a side elevation of a lubricant receiving nipple; n

Fig. 2 is a section on the line 2 2 of Fig. 1, being partly in elevation;

Fig. 3 is a section on the line 3-3 of Fig. 2;

Fig. 4 is a section through a strip from which the valves, used in the nipples, are out; and

Fig. 5 is a plan view of a strip after a plurality of valves have been stamped thererom.

Referring to the drawings I have shown a lubricant receiving nipple which is particularly useful as a nipple for water pumps 2G and the like, but may be used at any bearing` which requires lubrication.

Heretofore nipples, of the general type illustrated, were provided with one or more ball-check valves to prevent leakage from the nipple. While such nipples-have been quite satisfactory it has been found that occasionally the ball would not rest properly and therefore leakage would occur. To remedy this I have provided the nipple with a Hat valve 1 which is formed from two pieces of material preferably secured together by cement or in any other suitable manner.

'Ihe valve may be stamped from strips of material which have been secured together as illustrated in Figs-4 and 5. Eachvalve is formed with a ilexible compressible art 2, which may be leather, rubber or the li e and a ri 'd part 3 which may be metal.

e nipple body 4 is generally like the 40 nipple more fully illustrated and described in the pending application to Howard J. Murphy, Serial No. 8,586, but may be o any other suitable construction according to the lubricant expelling device with which it is 'to cooperate.

In the nipple illustrated in Figs. 1, 2 and 3 I have provided a lubricant passage 5 throu h the axis thereof and an annular shoul er 6 adjacent to the outer end of the nilpple to provide a seat for the valve. Thus w en the parts of the nipple are assembled the compressible part 2 of the valve is pressed tightly against the shoulder 6 by a spring 7 lustrated in Fi 2.

The valve ig. 3) has opposed edge portions 9 bearing against the wall of the assage 5 to guide in during reciprocation w ile other opposed edges are ilat and spaced away from the wall to permit free passage of lubricant around the valve 'when opened.

When lubricant is not being forced to the bearing, through the nipple, the valve covers the smaller portion of the passage 5 (Fig. 3) and the flexible part 2 is pressed so tightly against the shoulder or valve seat 6 that a tight seal is leakage. y

While I have shown and described a preferred embodiment of my'invention it will be understood that changes involving omission, substitution, alteration and reversal of parts and even changes in the mode of operation may be made without departing from the scope of my invention which is best defined in the following claims.

Claims:

1. A lubricant receiving nipple having a lubricant passage therethrough, an annular shoulder surrounding said passage adjacent to the outer end of said nipple to provide a valve seat, a flat valve and a spring normally urging said valve against said shoulder, said valve formed from a relatively thin compressible part back supported by a thin fiat rigid part against whlch said spring is Seated, said valveV parts bearing against a portion of the Wall of said passage beyondv said shoulder and spaced away from the remainder ofthe wall to permit free passage of lubricant through said passage when the provided thereby preventing valve is opened. l

2. A lubricant receiving niplple havin a lubricant passage therethroug an annu ar shoulder surrounding said passage adjacent to the outer end of said nipple to provide a valve seat, apliat valve and a spring normally urging said valve against said shoulder, said valve formed from a relatively thin compressible part back supported by a rigid flat discagainst which said spring 1s seated, and saidvalve having o posed edges bear- 105 ing against the wall of sald passage to guide said valve and opposed edges spaced away from said wall to permit lubricant'to pass said valve when opened.

3. A lubricant receiving nipple including a .cylindrical passageway through said nipple, a thin disk-like -valve having portions engaging the 'walls of said cylindrical passageway and having one or more flat edges to permit passage of lubricant by the valve when opened and alspring having one end seated against said valve to hold said'valve in a position normally preventing leakage from said nipple.

4. As an artlcle of manufacture, a valve disc comprising an irregularly shaped plane 15 Mosns F. CARR. 

